12220120210221 has 128 divisors (see below), whose sum is σ = 22642798510080. Its totient is φ = 6327966758400.

The previous prime is 12220120210219. The next prime is 12220120210241. The reversal of 12220120210221 is 12201202102221.

It is a happy number.

12220120210221 is a `hidden beast` number, since 1 + 2 + 220 + 12 + 0 + 210 + 221 = 666.

It is not a de Polignac number, because 12220120210221 - 2¹ = 12220120210219 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 12220120210194 and 12220120210203.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12220120210241) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 1254241276 + ... + 1254251018.

It is an arithmetic number, because the mean of its divisors is an integer number (176896863360).

Almost surely, 2^{12220120210221} is an apocalyptic number.

12220120210221 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

12220120210221 is a deficient number, since it is larger than the sum of its proper divisors (10422678299859).

12220120210221 is a wasteful number, since it uses less digits than its factorization.

12220120210221 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11624 (or 11618 counting only the distinct ones).

The product of its (nonzero) digits is 128, while the sum is 18.

Adding to 12220120210221 its reverse (12201202102221), we get a palindrome (24421322312442).

It can be divided in two parts, 1 and 2220120210221, that added together give a palindrome (2220120210222).

The spelling of 12220120210221 in words is "twelve trillion, two hundred twenty billion, one hundred twenty million, two hundred ten thousand, two hundred twenty-one".